Multiple Choice
The number of clinical trials and case reports published each year has grown from _____ in 1950 to ______ now.
A) 0 to 27,000
B) 500 to 3,000
C) 27,000 to 150,000
D) 150,000 to 2,000,000
Correct Answer:

Verified
Correct Answer:
Verified
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